Gaussmeters

[Miles]

Cheap on ebay

Hirst Magnetic Instruments Ltd

Projekt Elektronik GmbH

Alpha Lab Inc.

Dexing Magnet

 

[Miles]

I see that you can get a 0.32mm depth transverse probe (T3-0303M) to use with the LZ-610H Teslameter from Dexing Magnet. That would fit in the smallest airgap we're likely to encounter.....

 

[johnrobholmes]

I have the cheap ebay unit. Repeatable, easy to use, cheap. Gets me in the ballpark and allows for assessment of magnet grade.

 

[Miles]

Thanks John. That's good to know.

It would allow the magnet strength grade to be measured with the motor disassembled.

 

[johnrobholmes]

I also use it to judge flux leakage, and on occasion figure out polarity when I can't find my compass.

 

[Miles]

Just won the auction for this: http://www.ebay.co.uk/itm/Hirst-GM04-Gaussmeter-/111189288156?&autorefresh=true

 

[gogo]

I wonder if a guy could use a device like this to calibrate a crude measuring device that would use a cheap sensor.

 

[Miles]

I wonder if a guy could use a device like this to calibrate a crude measuring device that would use a cheap sensor.

http://endless-sphere.com/forums/viewtopic.php?f=2&t=45895

Lots of DIY designs: https://www.google.co.uk/search?q=diy+qaussmeter&ie=utf-8&oe=utf-8&rls=org.mozilla:en-USfficial&client=firefox-a&gws_rd=cr&ei=nzZlUu-ZG6jb0QWx74HYDw#q=diy+gaussmeter&rls=org.mozilla:en-USfficial&spell=1

 

[Miles]

http://www.wuntronic.com/en/index.php?site=2&xid=67&subid=109&pid=590

 

[bigmoose]

If anyone is interested I have a Bell Model 9640 Gaussmeter with STB4-0404 probe that could be made available after the first of the year (2014). Price would likely be around $700 US. If interested let me know and we can work something out. It calibrated within better than 5% at 1T about 2 years ago.